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| comment | | "parent_author":"",<br>"parent_permlink":"science",<br>"author":"ancientraccoon",<br>"permlink":"our-temperamental-sun",<br>"title":"Our Temperamental Sun",<br>"body":"<html>\n<h2>As you may already be aware,<br> the Sun is important.<\/h2>\n<p>What you are probably not aware of... is that NASA devotes a lot of time and energy towards monitoring the Sun. <\/p>\n<p> A <strong>coronal mass ejection<\/strong> (<strong>CME<\/strong>) is an eruption of incredibly-hot plasma from the Sun's corona. CME's are very common,<br> happening about <strong>every 5 days<\/strong>. However with the right intensity and direction,<br> they can pose serious risk to the Earth's telecommunication systems -- or even go so far as to disrupt ground based electronic systems:<\/p>\n<p>https:\/\/www.youtube.com\/watch?v=HFT7ATLQQx8&t=4s<\/p>\n<p>When an ejection is directed towards Earth,<br> <strong>the shockwave<\/strong> of travelling mass disrupts the Earth's magnetosphere -- compressing <strong>the shield that protects us <\/strong>from solar and cosmic radiation. This 'compression' exposes Earth-Orbiting satellites,<br> air-planes,<br> and other man-made systems to higher levels of electromagnetic and particle radiation. CME's have even been known to destroy sattelites -- costing hundreds of millions in damages. <\/p>\n<p>NASA (among other national \/ international organizations) monitors the Sun for these shockwaves from earth-orbiting installations such as the <strong>Solar Dynamic Observatory (SDO)<\/strong>.<\/p>\n<p><img src=\"https:\/\/i.imgsafe.org\/b3\/b3879ef542.jpeg\" width=\"576\" height=\"324\"\/><\/p>\n<p><em>Solar Dynamic Observatory (SDO): Credit - NASA<\/em><\/p>\n<p>By placing Sun-watching satellites into high orbits around the Earth -- we are allowed a 'forecast' of what the Sun plans to throw in our direction. In some cases,<br> satellite operators can even 'power-down' their spacecrafts in advance of the storm -- thereby saving their investments from our temperamental star. <\/p>\n<p>You can even<strong> follow the Sun's forecast <\/strong>yourself : <a href=\"https:\/\/twitter.com\/nwsswpc?lang=en\">By getting space weather tweets from NOAA<\/a><\/p>\n<\/html>",<br>"json_metadata":" \"tags\":[\"science\",<br>\"space\",<br>\"technology\",<br>\"weather\",<br>\"astronomy\" ,<br>\"image\":[\"https:\/\/img.youtube.com\/vi\/HFT7ATLQQx8\/0.jpg\",<br>\"https:\/\/i.imgsafe.org\/b3\/b3879ef542.jpeg\" ,<br>\"links\":[\"https:\/\/www.youtube.com\/watch?v=HFT7ATLQQx8&t=4s\",<br>\"https:\/\/twitter.com\/nwsswpc?lang=en\" ,<br>\"app\":\"steemit\/0.1\",<br>\"format\":\"html\" " | | vote | "voter":"ancientraccoon",
"author":"ancientraccoon",
"permlink":"our-temperamental-sun",
"weight":10000 |
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